SIX-LANE TUNNEL SITS ON SACKS OF GROUT

CONSTRUCTION OF THE TINGSTAD TUNNEL TO CARRY SIX LANES OF HIGHWAY TRAFFIC UNDER THE GOTA RIVER IN GOTHENBURG, SWEDEN, IS DESCRIBED. THE TUNNEL WAS BUILT IN FIVE SECTIONS BY THE SUNKEN-TUBE METHOD. FULL WIDTH OF THE STRUCTURE IS 98 FEET. GROUT CUSHION, HUGE NYLON SACKS PUMPED FULL OF GROUT TO A FORM-FIT BETWEEN THE TUNNEL BOTTOM AND THE TOPS OF THE PILES WAS PATENTED TO TRANSFER THE TUNNEL LOADS TO THE PILES. OVER ONE THOUSAND WOOD PILES HAD TO BE DRIVEN MORE THAN SEVENTY FEET DEEP TO SUPPORT THE TUNNEL IN THE CLAY. A CLUSTER OF SIX PILES AT EACH CORNER OF EACH TUNNEL SECTION WAS CAPPED WITH TREMIE CONCRETE. THE TUNNEL SECTIONS WERE PUMPED WITH WATER AND SUNK TO THE BOTTOM. EACH SECTION RESTED ON THE CORNER PILE CLUSTER, ABOVE THE PREVIOUSLY PLACED, EMPTY GROUT BAGS. CONSTRUCTORS THEN FILLED THE BAGS WITH GROUT. AFTER GROUT WAS PLACED AND SET BETWEEN THE RUBBER STRIPS, THE PERMANENT JOINT WAS MADE BY WELDING THE STEEL SECTIONS TOGETHER AND CONCRETING THE WALLS, ROOF, AND FLOOR.

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  • Supplemental Notes:
    • Vol 179, No 19, PP 104-105, 4 PHOT
  • Publication Date: 1967-11-9

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  • Accession Number: 00214776
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Mar 22 1994 12:00AM